This alternate circuit board will have a different serial number and a different chip number.If you want to spend more money for a circuit board with the same number, you will need to click on the button (above) for all replacements too see if the original is stocked.This alternate replacement is made by the same manufacturer with the same durability and quality.This alternate replacement has been verified as a working replacement fully compatible with the original system.

Cross Reference Verification

Step 1 of 2:Make sure your circuit board's serial number is in this list.Tip: The circuit board's serial number is on a sticker on the circuit board (this is not the box's number).Tip: Only the first five digits are need to verify the serial number.Tip: Sometimes the serial number is shown as P/N (part number).Tip: The image above shows an example of a serial number sticker.

Serial Numbers:

50833

BAL50833

Step 2 of 2:Make sure your circuit board's chip number is in this list.Tip: The whole chip number is on a sticker located on the circuit board.Tip: This is a different sticker than the serial number sticker.Tip: The image above shows an example of a chip number sticker.

Chip Numbers:

OM50DSUPDUPR1A

OM50DSUPDUPR1B

OM50DSUPDUPR1C

OM50DSUPDUPR1D

OM50DSUPDUPR1E

OM50DSUPDUPR1F

OM50DSUPDUP

OM50DSUPDUPR1

OM50DSUPDUPR1(x)

Additional Cross Ref., Compatibility & Installation

This alternate replacement circuit board is fully compatible with the original system.

If a wiring diagram is shipped with this circuit board (or emailed) then it shall override your existing wiring diagram.

Otherwise, set wires and jumper pins or dip switches the same as before.